package com.ruoyi.framework.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;

import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;

import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer;

import org.springframework.security.config.http.SessionCreationPolicy;

import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;
import com.ruoyi.framework.config.properties.PermitAllUrlProperties;
import com.ruoyi.framework.security.filter.JwtAuthenticationTokenFilter;
import com.ruoyi.framework.security.handle.AuthenticationEntryPointImpl;
import com.ruoyi.framework.security.handle.LogoutSuccessHandlerImpl;

/**
 * spring security配置
 * 
 * @author ruoyi
 */
@Configuration
@EnableWebSecurity
//@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig //extends WebSecurityConfigurerAdapter
{
//    /**
//     * 自定义用户认证逻辑
//     */
//    @Autowired
//    private UserDetailsService userDetailsService;
    
    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointImpl unauthorizedHandler;

    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;
    
    /**
     * 跨域过滤器
     */
    @Autowired
    private CorsFilter corsFilter;

    /**
     * 允许匿名访问的地址
     */
    @Autowired
    private PermitAllUrlProperties permitAllUrl;

    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
//    @Bean
//    @Override
//    public AuthenticationManager authenticationManagerBean() throws Exception
//    {
//        return super.authenticationManagerBean();
//    }
    @Bean
    public AuthenticationManager authenticationManager(
            AuthenticationConfiguration authenticationConfiguration) throws Exception
    {
        return authenticationConfiguration.getAuthenticationManager();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
//    @Override
//    protected void configure(HttpSecurity httpSecurity) throws Exception
//    {
//        // 注解标记允许匿名访问的url
//        ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = httpSecurity.authorizeRequests();
//        permitAllUrl.getUrls().forEach(url -> registry.antMatchers(url).permitAll());
//
//        httpSecurity
//                // CSRF禁用，因为不使用session
//                .csrf().disable()
//                // 禁用HTTP响应标头
//                .headers().cacheControl().disable().and()
//                // 认证失败处理类
//                .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
//                // 基于token，所以不需要session
//                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
//                // 过滤请求
//                .authorizeRequests()
//
//                // 对于登录login 注册register 验证码captchaImage 允许匿名访问
//                .antMatchers("/login", "/register", "/captchaImage").permitAll()
//                // 静态资源，可匿名访问
//                .antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**").permitAll()
//                .antMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**").permitAll()
//                // 除上面外的所有请求全部需要鉴权认证
//                .anyRequest().authenticated()
//                .and()
//                .headers().frameOptions().disable();
//        // 添加Logout filter
//        httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
//        // 添加JWT filter
//        httpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
//        // 添加CORS filter
//        httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
//        httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
//    }

    @Bean
    protected SecurityFilterChain securityFilterChain(HttpSecurity httpSecurity) throws Exception
    {
        // 注解标记允许匿名访问的url
        if(!permitAllUrl.getUrls().isEmpty())
        {
            ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = httpSecurity.authorizeRequests();
            permitAllUrl.getUrls().forEach(url -> registry.requestMatchers(url).permitAll());
        }

        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf((csfr) -> csfr.disable())
                // 禁用HTTP响应标头
                .headers((heaader) ->
                        heaader.cacheControl((cache) -> cache.disable())
                        .frameOptions((frame) -> frame.disable())
                )
                // 认证失败处理类
                .exceptionHandling((exceptionHandling) ->
                        exceptionHandling.authenticationEntryPoint(unauthorizedHandler))
                // 基于token，所以不需要session
                .sessionManagement((sessionManagement) ->
                        sessionManagement.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                // 过滤请求
                .authorizeHttpRequests((authorize) -> authorize
                        // 对于登录login 注册register 验证码captchaImage 允许匿名访问
                        .requestMatchers("/login", "/register", "/captchaImage").permitAll()
                        .requestMatchers("/submitLogin","/*.json*").permitAll()
                        // 静态资源，可匿名访问
                        .requestMatchers(HttpMethod.GET, "/", "/*.html", "/*/*.html", "/*/*.css", "/*/*.js", "/profile/**").permitAll()
                        .requestMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**").permitAll()
                        // 除上面外的所有请求全部需要鉴权认证
                        .anyRequest().authenticated()
                        );


        // 添加Logout filter
        httpSecurity.logout(logout -> logout.logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler));
        // 添加JWT filter
        httpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        // 添加CORS filter
        httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
        httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);

        return httpSecurity.build();
    }


    /**
     * 强散列哈希加密实现
     */
    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder()
    {
        return new BCryptPasswordEncoder();
    }

    /**
     * 身份认证接口
     */
//    @Override
//    protected void configure(AuthenticationManagerBuilder auth) throws Exception
//    {
//        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
//    }


}


